O..

The Violin Concerto No. 1, Op. 6, was composed by Niccolò Paganini in Italy, probably between 1817 and 1818. The concerto reveals that Paganini's technical wizardry was fully developed. Contemporary audiences gasped at the extended passages of double-stop thirds, both chromatic and in harmonics. The above text from the Wikipedia article "Violin Concerto No. 1 (Paganini)" text is available under CC BY-SA 3.0.